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Nasdaq · USD

COLB

COLUMBIA BANKING SYSTEM, INC.

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Tapewire entity
707
SEC CIK
0000887343
Parsed reports
726

Last 12 months

Inside the activity.

1 purchase rows · 7 sale rows

Disclosed non-derivative P/S rows, by transaction month. Includes amendments and private transactions.
Monthly counts
MonthPurchasesSales
Nov 202500
Dec 202500
Jan 202601
Feb 202600
Mar 202604
Apr 202600
May 202600
Jun 202612
Jul 202600
Aug 202600
Sep 202600
Oct 202600

Latest available

Insider transactions

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Purchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”

The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.

Transaction dateOwner / reported roleActivity / securityShares / unitsReported priceReported valueDetails
February 02, 2026 Filed Feb 4, 2026 23:56 UTC
Merrywell ChristopherSenior Executive VP
Tax withholdingCommon Stock 4,949 $29.69 $146,935.81
Disclosure

SEC source: 0001796657-26-000002 · wk-form4_1770249401.xml · nonDerivative · entry 2

Merrywell Christopher · CIK 0001796657 · Senior Executive VP

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 45,963

F2 · shares: Represents withholding of shares of common stock to satisfy the reporting person's tax withholding obligations in connection with the shares granted pursuant to the terms of the performance restricted stock units vesting.

Read SEC document
February 02, 2026 Filed Feb 4, 2026 23:56 UTC
Merrywell ChristopherSenior Executive VP
GrantCommon Stock 12,576 $29.69 $373,381.44
Disclosure

SEC source: 0001796657-26-000002 · wk-form4_1770249401.xml · nonDerivative · entry 1

Merrywell Christopher · CIK 0001796657 · Senior Executive VP

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 50,912

F1 · shares: Shares granted pursuant to the terms of the performance restricted stock units granted on February 21, 2023, which vested on February 2, 2026 based on to the issuer's relative return on tangible common equity for fiscal years 2023-2025 compared to a Compensation Committee approved group of peers.

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February 02, 2026 Filed Feb 4, 2026 23:53 UTC
BARUFFI KUMI YAMAMOTOEVP General Counsel, Corp Sec
Tax withholdingCommon Stock 2,110 $29.69 $62,645.90
Disclosure

SEC source: 0000887343-26-000028 · wk-form4_1770249204.xml · nonDerivative · entry 2

BARUFFI KUMI YAMAMOTO · CIK 0001619728 · EVP General Counsel, Corp Sec

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 55,106

F2 · shares: Represents withholding of shares of common stock to satisfy the reporting person's tax withholding obligations in connection with the shares granted pursuant to the terms of the performance restricted stock units vesting.

Read SEC document
February 02, 2026 Filed Feb 4, 2026 23:53 UTC
BARUFFI KUMI YAMAMOTOEVP General Counsel, Corp Sec
GrantCommon Stock 5,093 $29.69 $151,211.17
Disclosure

SEC source: 0000887343-26-000028 · wk-form4_1770249204.xml · nonDerivative · entry 1

BARUFFI KUMI YAMAMOTO · CIK 0001619728 · EVP General Counsel, Corp Sec

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 57,216

F1 · shares: Shares granted pursuant to the terms of the performance restricted stock units granted on February 21, 2023, which vested on February 2, 2026 based on to the issuer's relative return on tangible common equity for fiscal years 2023-2025 compared to a Compensation Committee approved group of peers.

Read SEC document
February 02, 2026 Filed Feb 4, 2026 23:54 UTC
Deer Aaron JamesEVP Chief Strategy/Innov Offcr
Tax withholdingCommon Stock 1,191 $29.69 $35,360.79
Disclosure

SEC source: 0001810107-26-000002 · wk-form4_1770249270.xml · nonDerivative · entry 2

Deer Aaron James · CIK 0001810107 · EVP Chief Strategy/Innov Offcr

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 42,374

F2 · shares: Represents withholding of shares of common stock to satisfy the reporting person's tax withholding obligations in connection with the shares granted pursuant to the terms of the performance restricted stock units vesting.

Read SEC document
February 02, 2026 Filed Feb 4, 2026 23:54 UTC
Deer Aaron JamesEVP Chief Strategy/Innov Offcr
GrantCommon Stock 2,620 $29.69 $77,787.80
Disclosure

SEC source: 0001810107-26-000002 · wk-form4_1770249270.xml · nonDerivative · entry 1

Deer Aaron James · CIK 0001810107 · EVP Chief Strategy/Innov Offcr

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 43,565

F1 · shares: Shares granted pursuant to the terms of the performance restricted stock units granted on February 21, 2023, which vested on February 2, 2026 based on to the issuer's relative return on tangible common equity for fiscal years 2023-2025 compared to a Compensation Committee approved group of peers.

Read SEC document
February 02, 2026 Filed Feb 4, 2026 23:52 UTC
Anderson Drew KEVP Chief Admin Officer
Tax withholdingCommon Stock 1,710 $29.69 $50,769.90
Disclosure

SEC source: 0000887343-26-000026 · wk-form4_1770249152.xml · nonDerivative · entry 2

Anderson Drew K · CIK 0001955918 · EVP Chief Admin Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 23,274

F2 · shares: Represents withholding of shares of common stock to satisfy the reporting person's tax withholding obligations in connection with the shares granted pursuant to the terms of the performance restricted stock units vesting.

Read SEC document
February 02, 2026 Filed Feb 4, 2026 23:52 UTC
Anderson Drew KEVP Chief Admin Officer
GrantCommon Stock 3,146 $29.69 $93,404.74
Disclosure

SEC source: 0000887343-26-000026 · wk-form4_1770249152.xml · nonDerivative · entry 1

Anderson Drew K · CIK 0001955918 · EVP Chief Admin Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 24,984

F1 · shares: Shares granted pursuant to the terms of the performance restricted stock units granted on February 21, 2023, which vested on February 2, 2026 based on to the issuer's relative return on tangible common equity for fiscal years 2023-2025 compared to a Compensation Committee approved group of peers.

Read SEC document
January 30, 2026 Filed Feb 3, 2026 22:13 UTC SaleCommon Stock 13,725 $29.43 $403,926.75
Disclosure

SEC source: 0000887343-26-000024 · wk-form4_1770156796.xml · nonDerivative · entry 1

GARDNER STEVEN R · CIK 0001267342 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · by 401(k)

Disclosed balance after: 0

F1 · shares: Shares sold to satisfy mandatory liquidation requirements of the reporting person's self-directed 401(k) plan in connection with a rollover.

Read SEC document
January 20, 2026 Filed Jan 22, 2026 18:08 UTC
Nixon Torran BSenior Executive VP
Tax withholdingCommon Stock 3,873 $28.35 $109,799.55
Disclosure

SEC source: 0000887343-26-000015 · wk-form4_1769123315.xml · nonDerivative · entry 2

Nixon Torran B · CIK 0001689701 · Senior Executive VP

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 99,279

F2 · shares: Represents withholding of shares of common stock to satisfy the reporting person's tax withholding obligations in connection with the vesting of previously issued restricted stock units.

Read SEC document
January 20, 2026 Filed Jan 22, 2026 18:08 UTC
Nixon Torran BSenior Executive VP
Disposition to issuerCommon Stock 1,717 $0.00 $0.00
Disclosure

SEC source: 0000887343-26-000015 · wk-form4_1769123315.xml · nonDerivative · entry 1

Nixon Torran B · CIK 0001689701 · Senior Executive VP

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 103,152

F1 · shares: Shares forfeited pursuant to the terms of the performance restricted stock units granted on February 21, 2023 and reported on the reporting person's Form 4 filed on February 21, 2023 (in accordance with Rule 16b-3(e)) due to the issuer's total shareholder return performance target not being met at target

Read SEC document
January 20, 2026 Filed Jan 22, 2026 23:13 UTC
Deer Aaron JamesEVP Chief Strategy/Innov Offcr
Tax withholdingCommon Stock 776 $28.35 $21,999.60
Disclosure

SEC source: 0000887343-26-000021 · wk-form4_1769123582.xml · nonDerivative · entry 2

Deer Aaron James · CIK 0001810107 · EVP Chief Strategy/Innov Offcr

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 40,945

F2 · shares: Represents withholding of shares of common stock to satisfy the reporting person's tax withholding obligations in connection with the vesting of previously issued restricted stock units.

Read SEC document
January 20, 2026 Filed Jan 22, 2026 23:13 UTC
Deer Aaron JamesEVP Chief Strategy/Innov Offcr
Disposition to issuerCommon Stock 325 $0.00 $0.00
Disclosure

SEC source: 0000887343-26-000021 · wk-form4_1769123582.xml · nonDerivative · entry 1

Deer Aaron James · CIK 0001810107 · EVP Chief Strategy/Innov Offcr

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 41,721

F1 · shares: Shares forfeited pursuant to the terms of the performance restricted stock units granted on February 21, 2023 and reported on the reporting person's Form 4 filed on February 21, 2023 (in accordance with Rule 16b-3(e)) due to the issuer's total shareholder return performance target not being met at target.

Read SEC document
January 20, 2026 Filed Jan 22, 2026 23:12 UTC
Namdar FrankEVP Chief Credit Officer
Tax withholdingCommon Stock 1,652 $28.35 $46,834.20
Disclosure

SEC source: 0000887343-26-000020 · wk-form4_1769123548.xml · nonDerivative · entry 2

Namdar Frank · CIK 0001759802 · EVP Chief Credit Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 31,163

F2 · shares: Represents withholding of shares of common stock to satisfy the reporting person's tax withholding obligations in connection with the vesting of previously issued restricted stock units.

Read SEC document
January 20, 2026 Filed Jan 22, 2026 23:12 UTC
Namdar FrankEVP Chief Credit Officer
Disposition to issuerCommon Stock 579 $0.00 $0.00
Disclosure

SEC source: 0000887343-26-000020 · wk-form4_1769123548.xml · nonDerivative · entry 1

Namdar Frank · CIK 0001759802 · EVP Chief Credit Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 32,815

F1 · shares: Shares forfeited pursuant to the terms of the performance restricted stock units granted on February 21, 2023 and reported on the reporting person's Form 4 filed on February 21, 2023 (in accordance with Rule 16b-3(e)) due to the issuer's total shareholder return performance target not being met at target.

Read SEC document
January 20, 2026 Filed Jan 22, 2026 23:11 UTC
Moore Devine DavidEVP Chief Marketing Officer
Tax withholdingCommon Stock 628 $28.35 $17,803.80
Disclosure

SEC source: 0000887343-26-000019 · wk-form4_1769123505.xml · nonDerivative · entry 2

Moore Devine David · CIK 0001798077 · EVP Chief Marketing Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 22,137

F2 · shares: Represents withholding of shares of common stock to satisfy the reporting person's tax withholding obligations in connection with the vesting of previously issued restricted stock units.

Read SEC document
January 20, 2026 Filed Jan 22, 2026 23:11 UTC
Moore Devine DavidEVP Chief Marketing Officer
Disposition to issuerCommon Stock 260 $0.00 $0.00
Disclosure

SEC source: 0000887343-26-000019 · wk-form4_1769123505.xml · nonDerivative · entry 1

Moore Devine David · CIK 0001798077 · EVP Chief Marketing Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 22,765

F1 · shares: Shares forfeited pursuant to the terms of the performance restricted stock units granted on February 21, 2023 and reported on the reporting person's Form 4 filed on February 21, 2023 (in accordance with Rule 16b-3(e)) due to the issuer's total shareholder return performance target not being met at target.

Read SEC document
January 20, 2026 Filed Jan 22, 2026 23:11 UTC
OGNALL ANDREW HEVP Chief Risk Officer
Tax withholdingCommon Stock 1,353 $28.35 $38,357.55
Disclosure

SEC source: 0000887343-26-000018 · wk-form4_1769123457.xml · nonDerivative · entry 2

OGNALL ANDREW H · CIK 0001606248 · EVP Chief Risk Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 72,356

F2 · shares: Represents withholding of shares of common stock to satisfy the reporting person's tax withholding obligations in connection with the vesting of previously issued restricted stock units.

Read SEC document
January 20, 2026 Filed Jan 22, 2026 23:11 UTC
OGNALL ANDREW HEVP Chief Risk Officer
Disposition to issuerCommon Stock 559 $0.00 $0.00
Disclosure

SEC source: 0000887343-26-000018 · wk-form4_1769123457.xml · nonDerivative · entry 1

OGNALL ANDREW H · CIK 0001606248 · EVP Chief Risk Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 73,709

F1 · shares: Shares forfeited pursuant to the terms of the performance restricted stock units granted on February 21, 2023 and reported on the reporting person's Form 4 filed on February 21, 2023 (in accordance with Rule 16b-3(e)) due to the issuer's total shareholder return performance target not being met at target

Read SEC document
January 20, 2026 Filed Jan 22, 2026 23:07 UTC
Merrywell ChristopherSenior Executive VP
Tax withholdingCommon Stock 3,496 $28.35 $99,111.60
Disclosure

SEC source: 0000887343-26-000014 · wk-form4_1769123264.xml · nonDerivative · entry 2

Merrywell Christopher · CIK 0001796657 · Senior Executive VP

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 38,336

F2 · shares: Represents withholding of shares of common stock to satisfy the reporting person's tax withholding obligations in connection with the vesting of previously issued restricted stock units.

Read SEC document
January 20, 2026 Filed Jan 22, 2026 23:07 UTC
Merrywell ChristopherSenior Executive VP
Disposition to issuerCommon Stock 1,560 $0.00 $0.00
Disclosure

SEC source: 0000887343-26-000014 · wk-form4_1769123264.xml · nonDerivative · entry 1

Merrywell Christopher · CIK 0001796657 · Senior Executive VP

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 41,832

F1 · shares: Shares forfeited pursuant to the terms of the performance restricted stock units granted on February 21, 2023 and reported on the reporting person's Form 4 filed on February 21, 2023 (in accordance with Rule 16b-3(e)) due to the issuer's total shareholder return performance target not being met at target.

Read SEC document
January 20, 2026 Filed Jan 22, 2026 23:10 UTC
BARUFFI KUMI YAMAMOTOEVP General Counsel, Corp Sec
Tax withholdingCommon Stock 1,508 $28.35 $42,751.80
Disclosure

SEC source: 0000887343-26-000017 · wk-form4_1769123407.xml · nonDerivative · entry 2

BARUFFI KUMI YAMAMOTO · CIK 0001619728 · EVP General Counsel, Corp Sec

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 52,123

F2 · shares: Represents withholding of shares of common stock to satisfy the reporting person's tax withholding obligations in connection with the vesting of previously issued restricted stock units.

Read SEC document
January 20, 2026 Filed Jan 22, 2026 23:10 UTC
BARUFFI KUMI YAMAMOTOEVP General Counsel, Corp Sec
Disposition to issuerCommon Stock 632 $0.00 $0.00
Disclosure

SEC source: 0000887343-26-000017 · wk-form4_1769123407.xml · nonDerivative · entry 1

BARUFFI KUMI YAMAMOTO · CIK 0001619728 · EVP General Counsel, Corp Sec

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 53,631

F1 · shares: Shares forfeited pursuant to the terms of the performance restricted stock units granted on February 21, 2023 and reported on the reporting person's Form 4 filed on February 21, 2023 (in accordance with Rule 16b-3(e)) due to the issuer's total shareholder return performance target not being met at target.

Read SEC document
January 20, 2026 Filed Jan 22, 2026 23:09 UTC
Anderson Drew KEVP Chief Admin Officer
Tax withholdingCommon Stock 1,114 $28.35 $31,581.90
Disclosure

SEC source: 0000887343-26-000016 · wk-form4_1769123362.xml · nonDerivative · entry 2

Anderson Drew K · CIK 0001955918 · EVP Chief Admin Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 21,838

F2 · shares: Represents withholding of shares of common stock to satisfy the reporting person's tax withholding obligations in connection with the vesting of previously issued restricted stock units.

Read SEC document
January 20, 2026 Filed Jan 22, 2026 23:09 UTC
Anderson Drew KEVP Chief Admin Officer
Disposition to issuerCommon Stock 390 $0.00 $0.00
Disclosure

SEC source: 0000887343-26-000016 · wk-form4_1769123362.xml · nonDerivative · entry 1

Anderson Drew K · CIK 0001955918 · EVP Chief Admin Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 22,952

F1 · shares: Shares forfeited pursuant to the terms of the performance restricted stock units granted on February 21, 2023 and reported on the reporting person's Form 4 filed on February 21, 2023 (in accordance with Rule 16b-3(e)) due to the issuer's total shareholder return performance target not being met at target.

Read SEC document
January 20, 2026 Filed Jan 22, 2026 23:06 UTC
Stein ClintDirector · Chair, President, CEO
Tax withholdingCommon Stock 5,635 $28.35 $159,752.25
Disclosure

SEC source: 0000887343-26-000013 · wk-form4_1769123161.xml · nonDerivative · entry 4

Stein Clint · CIK 0001550429 · Director · Chair, President, CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 123,396

F2 · shares: Represents withholding of shares of common stock to satisfy the reporting person's tax withholding obligations in connection with the vesting of previously issued restricted stock units.

Read SEC document
January 20, 2026 Filed Jan 22, 2026 23:06 UTC
Stein ClintDirector · Chair, President, CEO
Disposition to issuerCommon Stock 2,727 $0.00 $0.00
Disclosure

SEC source: 0000887343-26-000013 · wk-form4_1769123161.xml · nonDerivative · entry 3

Stein Clint · CIK 0001550429 · Director · Chair, President, CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 129,031

F3 · shares: Shares forfeited pursuant to the terms of the performance restricted stock units granted on March 14, 2023 and reported on the reporting person's Form 4 filed on March 15, 2023 (in accordance with Rule 16b-3(e)) due to the issuer's total shareholder return performance target not being met at target.

Read SEC document
January 20, 2026 Filed Jan 22, 2026 23:06 UTC
Stein ClintDirector · Chair, President, CEO
Tax withholdingCommon Stock 7,615 $28.35 $215,885.25
Disclosure

SEC source: 0000887343-26-000013 · wk-form4_1769123161.xml · nonDerivative · entry 2

Stein Clint · CIK 0001550429 · Director · Chair, President, CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 131,758

F2 · shares: Represents withholding of shares of common stock to satisfy the reporting person's tax withholding obligations in connection with the vesting of previously issued restricted stock units.

Read SEC document
January 20, 2026 Filed Jan 22, 2026 23:06 UTC
Stein ClintDirector · Chair, President, CEO
Disposition to issuerCommon Stock 3,588 $0.00 $0.00
Disclosure

SEC source: 0000887343-26-000013 · wk-form4_1769123161.xml · nonDerivative · entry 1

Stein Clint · CIK 0001550429 · Director · Chair, President, CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 139,373

F1 · shares: Shares forfeited pursuant to the terms of the performance restricted stock units granted on February 21, 2023 and reported on the reporting person's Form 4 filed on February 21, 2023 (in accordance with Rule 16b-3(e)) due to the issuer's total shareholder return performance target not being met at target.

Read SEC document
December 31, 2025 Filed Dec 31, 2025 23:13 UTC
OGNALL ANDREW HEVP Chief Risk Officer
GrantRestricted Stock Unit · Derivative 21,467 $27.95 $600,002.65
Disclosure

SEC source: 0000887343-25-000284 · wk-form4_1767222835.xml · derivative · entry 1

OGNALL ANDREW H · CIK 0001606248 · EVP Chief Risk Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 47,405

Underlying: Common Stock · 21,467 shares

Expires not disclosed

F1 · derivative.exercise_price: Restricted stock units granted 12/31/2025. The grant will vest 100% on or about December 31, 2028.

F1 · derivative.exercise_date: Restricted stock units granted 12/31/2025. The grant will vest 100% on or about December 31, 2028.

F1 · derivative.expiration_date: Restricted stock units granted 12/31/2025. The grant will vest 100% on or about December 31, 2028.

Read SEC document
December 03, 2025 Filed Feb 6, 2026 00:07 UTC
MACHUCA LUISDirector
GrantDeferred Compensation Phantom Stock · Derivative 65 $28.17 $1,831.05
Disclosure

SEC source: 0001133099-26-000003 · wk-form4_1770336444.xml · derivative · entry 1

MACHUCA LUIS · CIK 0001133099 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · Deferred Compensation

Disclosed balance after: 47,182

Underlying: Common · 65 shares

Expires not disclosed

F1 · derivative.exercise_price: The deferred compensation plan phantom stock was accrued under the Registrant's deferred compensation plan and the result of a transaction by the plan administrator that the reporting person did not request and that they were not aware of at the time of the transaction. The phantom stock will be paid in accordance with the terms of the deferred compensation plan following the end of the reporting person's employment with the Registrant.

F1 · derivative.exercise_date: The deferred compensation plan phantom stock was accrued under the Registrant's deferred compensation plan and the result of a transaction by the plan administrator that the reporting person did not request and that they were not aware of at the time of the transaction. The phantom stock will be paid in accordance with the terms of the deferred compensation plan following the end of the reporting person's employment with the Registrant.

F1 · derivative.expiration_date: The deferred compensation plan phantom stock was accrued under the Registrant's deferred compensation plan and the result of a transaction by the plan administrator that the reporting person did not request and that they were not aware of at the time of the transaction. The phantom stock will be paid in accordance with the terms of the deferred compensation plan following the end of the reporting person's employment with the Registrant.

Read SEC document
November 05, 2025 Filed Nov 6, 2025 21:36 UTC
MACHUCA LUISDirector
GrantDeferred Compensation Phantom Stock · Derivative 630 $26.55 $16,726.50
Disclosure

SEC source: 0001133099-25-000010 · wk-form4_1762464974.xml · derivative · entry 1

MACHUCA LUIS · CIK 0001133099 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · Deferred Compensation

Disclosed balance after: 47,117

Underlying: Common · 630 shares

Expires not disclosed

F1 · derivative.exercise_price: The deferred compensation plan phantom stock was accrued under the Registrant's deferred compensation plan and will be paid in accordance with the terms of the deferred compensation plan following end of the reporting person's employment with the Registrant.

F1 · derivative.exercise_date: The deferred compensation plan phantom stock was accrued under the Registrant's deferred compensation plan and will be paid in accordance with the terms of the deferred compensation plan following end of the reporting person's employment with the Registrant.

F1 · derivative.expiration_date: The deferred compensation plan phantom stock was accrued under the Registrant's deferred compensation plan and will be paid in accordance with the terms of the deferred compensation plan following end of the reporting person's employment with the Registrant.

F1 · derivative.underlying_shares: The deferred compensation plan phantom stock was accrued under the Registrant's deferred compensation plan and will be paid in accordance with the terms of the deferred compensation plan following end of the reporting person's employment with the Registrant.

Read SEC document
September 02, 2025 Filed Sep 4, 2025 01:41 UTC GrantCommon Stock 2,205 $0.00 $0.00
Disclosure

SEC source: 0000887343-25-000252 · wk-form4_1756950088.xml · nonDerivative · entry 3

STUDENMUND JAYNIE M · CIK 0001222385 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 17,858

F2 · shares: Restricted stock awards that vest in their entirety on May 15, 2026.

F2 · price: Restricted stock awards that vest in their entirety on May 15, 2026.

Read SEC document
September 02, 2025 Filed Sep 4, 2025 01:31 UTC GrantCommon Stock 2,205 $0.00 $0.00
Disclosure

SEC source: 0000887343-25-000249 · wk-form4_1756949467.xml · nonDerivative · entry 2

MITCHELL M CHRISTIAN · CIK 0001284574 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 37,960

F2 · shares: Restricted stock awards that vest in their entirety on May 15, 2026.

F2 · price: Restricted stock awards that vest in their entirety on May 15, 2026.

Read SEC document
August 31, 2025 Filed Sep 4, 2025 01:41 UTC GrantCommon Stock 3,843 $0.00 $0.00
Disclosure

SEC source: 0000887343-25-000252 · wk-form4_1756950088.xml · nonDerivative · entry 2

STUDENMUND JAYNIE M · CIK 0001222385 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Morgan Stanley IRA

Disclosed balance after: 3,843

F1 · shares: Acquired in connection with Columbia Banking System, Inc.'s ("Columbia") acquisition of Pacific Premier Bancorp, Inc. ("Pacific Premier") on August 31, 2025. Pursuant to the merger agreement, each issued and outstanding share of Pacific Premier common stock held by the reporting person was converted into the right to receive 0.9150 of a share of Columbia common stock. All fractional share holdings were paid in cash. On August 29, 2025, the closing price of Columbia common stock was $26.77, and the closing price of Pacific Premier common stock was $24.49.

F1 · price: Acquired in connection with Columbia Banking System, Inc.'s ("Columbia") acquisition of Pacific Premier Bancorp, Inc. ("Pacific Premier") on August 31, 2025. Pursuant to the merger agreement, each issued and outstanding share of Pacific Premier common stock held by the reporting person was converted into the right to receive 0.9150 of a share of Columbia common stock. All fractional share holdings were paid in cash. On August 29, 2025, the closing price of Columbia common stock was $26.77, and the closing price of Pacific Premier common stock was $24.49.

Read SEC document
August 31, 2025 Filed Sep 4, 2025 01:41 UTC GrantCommon Stock 15,653 $0.00 $0.00
Disclosure

SEC source: 0000887343-25-000252 · wk-form4_1756950088.xml · nonDerivative · entry 1

STUDENMUND JAYNIE M · CIK 0001222385 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 15,653

F1 · shares: Acquired in connection with Columbia Banking System, Inc.'s ("Columbia") acquisition of Pacific Premier Bancorp, Inc. ("Pacific Premier") on August 31, 2025. Pursuant to the merger agreement, each issued and outstanding share of Pacific Premier common stock held by the reporting person was converted into the right to receive 0.9150 of a share of Columbia common stock. All fractional share holdings were paid in cash. On August 29, 2025, the closing price of Columbia common stock was $26.77, and the closing price of Pacific Premier common stock was $24.49.

F1 · price: Acquired in connection with Columbia Banking System, Inc.'s ("Columbia") acquisition of Pacific Premier Bancorp, Inc. ("Pacific Premier") on August 31, 2025. Pursuant to the merger agreement, each issued and outstanding share of Pacific Premier common stock held by the reporting person was converted into the right to receive 0.9150 of a share of Columbia common stock. All fractional share holdings were paid in cash. On August 29, 2025, the closing price of Columbia common stock was $26.77, and the closing price of Pacific Premier common stock was $24.49.

Read SEC document
August 31, 2025 Filed Sep 4, 2025 01:47 UTC GrantCommon Stock 338,221 $0.00 $0.00
Disclosure

SEC source: 0000887343-25-000254 · wk-form4_1756950422.xml · nonDerivative · entry 2

GARDNER STEVEN R · CIK 0001267342 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By The Gardner Family Trust

Disclosed balance after: 338,221

F1 · shares: Acquired in connection with Columbia Banking System, Inc.'s ("Columbia") acquisition of Pacific Premier Bancorp, Inc. ("Pacific Premier") on August 31, 2025. Pursuant to the merger agreement, each issued and outstanding share of Pacific Premier common stock held by the reporting person was converted into the right to receive 0.9150 of a share of Columbia common stock. All fractional share holdings were paid in cash. On August 29, 2025, the closing price of Columbia common stock was $26.77, and the closing price of Pacific Premier common stock was $24.49.

F1 · price: Acquired in connection with Columbia Banking System, Inc.'s ("Columbia") acquisition of Pacific Premier Bancorp, Inc. ("Pacific Premier") on August 31, 2025. Pursuant to the merger agreement, each issued and outstanding share of Pacific Premier common stock held by the reporting person was converted into the right to receive 0.9150 of a share of Columbia common stock. All fractional share holdings were paid in cash. On August 29, 2025, the closing price of Columbia common stock was $26.77, and the closing price of Pacific Premier common stock was $24.49.

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August 31, 2025 Filed Sep 4, 2025 01:47 UTC GrantCommon Stock 245,875 $0.00 $0.00
Disclosure

SEC source: 0000887343-25-000254 · wk-form4_1756950422.xml · nonDerivative · entry 1

GARDNER STEVEN R · CIK 0001267342 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 245,875

F1 · shares: Acquired in connection with Columbia Banking System, Inc.'s ("Columbia") acquisition of Pacific Premier Bancorp, Inc. ("Pacific Premier") on August 31, 2025. Pursuant to the merger agreement, each issued and outstanding share of Pacific Premier common stock held by the reporting person was converted into the right to receive 0.9150 of a share of Columbia common stock. All fractional share holdings were paid in cash. On August 29, 2025, the closing price of Columbia common stock was $26.77, and the closing price of Pacific Premier common stock was $24.49.

F1 · price: Acquired in connection with Columbia Banking System, Inc.'s ("Columbia") acquisition of Pacific Premier Bancorp, Inc. ("Pacific Premier") on August 31, 2025. Pursuant to the merger agreement, each issued and outstanding share of Pacific Premier common stock held by the reporting person was converted into the right to receive 0.9150 of a share of Columbia common stock. All fractional share holdings were paid in cash. On August 29, 2025, the closing price of Columbia common stock was $26.77, and the closing price of Pacific Premier common stock was $24.49.

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August 31, 2025 Filed Sep 4, 2025 01:31 UTC GrantCommon Stock 35,755 $0.00 $0.00
Disclosure

SEC source: 0000887343-25-000249 · wk-form4_1756949467.xml · nonDerivative · entry 1

MITCHELL M CHRISTIAN · CIK 0001284574 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 35,755

F1 · shares: Acquired in connection with Columbia Banking System, Inc.'s ("Columbia") acquisition of Pacific Premier Bancorp, Inc. ("Pacific Premier") on August 31, 2025. Pursuant to the merger agreement, each issued and outstanding share of Pacific Premier common stock held by the reporting person was converted into the right to receive 0.9150 of a share of Columbia common stock. All fractional share holdings were paid in cash. On August 29, 2025, the closing price of Columbia common stock was $26.77, and the closing price of Pacific Premier common stock was $24.49.

F1 · price: Acquired in connection with Columbia Banking System, Inc.'s ("Columbia") acquisition of Pacific Premier Bancorp, Inc. ("Pacific Premier") on August 31, 2025. Pursuant to the merger agreement, each issued and outstanding share of Pacific Premier common stock held by the reporting person was converted into the right to receive 0.9150 of a share of Columbia common stock. All fractional share holdings were paid in cash. On August 29, 2025, the closing price of Columbia common stock was $26.77, and the closing price of Pacific Premier common stock was $24.49.

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July 29, 2025 Filed Jul 31, 2025 20:34 UTC
MACHUCA LUISDirector
GrantDeferred Compensation Phantom Stock · Derivative 668 $24.83 $16,586.44
Disclosure

SEC source: 0000887343-25-000223 · wk-form4_1753994096.xml · derivative · entry 1

MACHUCA LUIS · CIK 0001133099 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · Deferred Compensation

Disclosed balance after: 46,487

Underlying: Common · 668 shares

Expires not disclosed

F1 · derivative.exercise_price: The deferred compensation plan phantom stock was accrued under the Registrant's deferred compensation plan and will be paid in accordance with the terms of the deferred compensation plan following end of the reporting person's employment with the Registrant.

F1 · derivative.exercise_date: The deferred compensation plan phantom stock was accrued under the Registrant's deferred compensation plan and will be paid in accordance with the terms of the deferred compensation plan following end of the reporting person's employment with the Registrant.

F1 · derivative.expiration_date: The deferred compensation plan phantom stock was accrued under the Registrant's deferred compensation plan and will be paid in accordance with the terms of the deferred compensation plan following end of the reporting person's employment with the Registrant.

F1 · derivative.underlying_shares: The deferred compensation plan phantom stock was accrued under the Registrant's deferred compensation plan and will be paid in accordance with the terms of the deferred compensation plan following end of the reporting person's employment with the Registrant.

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July 22, 2025 Filed Jul 23, 2025 22:46 UTC
Giem JudiEVP CHRO
GrantPerformance Restricted Stock Unit · Derivative 3,590 $24.38 $87,524.20
Disclosure

SEC source: 0000887343-25-000217 · wk-form4_1753310781.xml · derivative · entry 3

Giem Judi · CIK 0001813483 · EVP CHRO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,180

Underlying: Common Stock · 3,590 shares

Expires not disclosed

F3 · derivative.exercise_price: Performance restricted stock units granted 07/22/2025. The grant will vest approximately three years following the grant date based on the issuer's relative return on tangible common equity for fiscal years 2025-2027 compared to a Compensation Committee approved group of peers.

F3 · derivative.exercise_date: Performance restricted stock units granted 07/22/2025. The grant will vest approximately three years following the grant date based on the issuer's relative return on tangible common equity for fiscal years 2025-2027 compared to a Compensation Committee approved group of peers.

F3 · derivative.expiration_date: Performance restricted stock units granted 07/22/2025. The grant will vest approximately three years following the grant date based on the issuer's relative return on tangible common equity for fiscal years 2025-2027 compared to a Compensation Committee approved group of peers.

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July 22, 2025 Filed Jul 23, 2025 22:46 UTC
Giem JudiEVP CHRO
GrantPerformance Restricted Stock Unit · Derivative 3,590 $24.38 $87,524.20
Disclosure

SEC source: 0000887343-25-000217 · wk-form4_1753310781.xml · derivative · entry 2

Giem Judi · CIK 0001813483 · EVP CHRO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,590

Underlying: Common Stock · 3,590 shares

Expires not disclosed

F2 · derivative.exercise_price: Performance restricted stock units granted 07/22/2025. The grant will vest approximately three years following the grant date based on the issuer's relative total shareholder return performance for fiscal years 2025-2027 compared to a Compensation Committee approved group of peers.

F2 · derivative.exercise_date: Performance restricted stock units granted 07/22/2025. The grant will vest approximately three years following the grant date based on the issuer's relative total shareholder return performance for fiscal years 2025-2027 compared to a Compensation Committee approved group of peers.

F2 · derivative.expiration_date: Performance restricted stock units granted 07/22/2025. The grant will vest approximately three years following the grant date based on the issuer's relative total shareholder return performance for fiscal years 2025-2027 compared to a Compensation Committee approved group of peers.

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July 22, 2025 Filed Jul 23, 2025 22:46 UTC
Giem JudiEVP CHRO
GrantRestricted Stock Unit · Derivative 7,179 $24.38 $175,024.02
Disclosure

SEC source: 0000887343-25-000217 · wk-form4_1753310781.xml · derivative · entry 1

Giem Judi · CIK 0001813483 · EVP CHRO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,179

Underlying: Common Stock · 7,179 shares

Expires not disclosed

F1 · derivative.exercise_price: Restricted stock units granted 07/22/2025. The grant will vest 33.33% per year over three years.

F1 · derivative.exercise_date: Restricted stock units granted 07/22/2025. The grant will vest 33.33% per year over three years.

F1 · derivative.expiration_date: Restricted stock units granted 07/22/2025. The grant will vest 33.33% per year over three years.

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June 02, 2025 Filed Jun 3, 2025 23:57 UTC
MACHUCA LUISDirector
GrantDeferred Compensation Phantom Stock · Derivative 708 $23.29 $16,489.32
Disclosure

SEC source: 0000887343-25-000197 · wk-form4_1748995041.xml · derivative · entry 1

MACHUCA LUIS · CIK 0001133099 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · Deferred Compensation

Disclosed balance after: 45,819

Underlying: Common · 708 shares

Expires not disclosed

F1 · derivative.exercise_price: The deferred compensation plan phantom stock was accrued under the Registrant's deferred compensation plan and will be paid in accordance with the terms of the deferred compensation plan following end of the reporting person's employment with the Registrant.

F1 · derivative.exercise_date: The deferred compensation plan phantom stock was accrued under the Registrant's deferred compensation plan and will be paid in accordance with the terms of the deferred compensation plan following end of the reporting person's employment with the Registrant.

F1 · derivative.expiration_date: The deferred compensation plan phantom stock was accrued under the Registrant's deferred compensation plan and will be paid in accordance with the terms of the deferred compensation plan following end of the reporting person's employment with the Registrant.

F1 · derivative.underlying_shares: The deferred compensation plan phantom stock was accrued under the Registrant's deferred compensation plan and will be paid in accordance with the terms of the deferred compensation plan following end of the reporting person's employment with the Registrant.

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May 15, 2025 Filed May 17, 2025 01:53 UTC
POPE MARIA MDirector
GrantCommon Stock 3,382 $0.00 $0.00
Disclosure

SEC source: 0000887343-25-000195 · wk-form4_1747446779.xml · nonDerivative · entry 1

POPE MARIA M · CIK 0001239047 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 47,569

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May 15, 2025 Filed May 17, 2025 01:52 UTC GrantCommon Stock 3,382 $0.00 $0.00
Disclosure

SEC source: 0000887343-25-000194 · wk-form4_1747446768.xml · nonDerivative · entry 1

Finkelstein Mark A · CIK 0001537873 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 31,605

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May 15, 2025 Filed May 17, 2025 01:52 UTC
Forrest EricDirector
GrantCommon Stock 3,382 $0.00 $0.00
Disclosure

SEC source: 0000887343-25-000193 · wk-form4_1747446758.xml · nonDerivative · entry 1

Forrest Eric · CIK 0001610387 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 32,402

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May 15, 2025 Filed May 17, 2025 01:52 UTC GrantCommon Stock 3,382 $0.00 $0.00
Disclosure

SEC source: 0000887343-25-000192 · wk-form4_1747446747.xml · nonDerivative · entry 1

Lund Randal Lee · CIK 0001713258 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 23,714

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May 15, 2025 Filed May 17, 2025 01:52 UTC
MACHUCA LUISDirector
GrantCommon Stock 3,382 $0.00 $0.00
Disclosure

SEC source: 0000887343-25-000191 · wk-form4_1747446736.xml · nonDerivative · entry 1

MACHUCA LUIS · CIK 0001133099 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 26,004

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May 15, 2025 Filed May 17, 2025 01:52 UTC GrantCommon Stock 3,382 $0.00 $0.00
Disclosure

SEC source: 0000887343-25-000190 · wk-form4_1747446726.xml · nonDerivative · entry 1

Numata S Mae Fujita · CIK 0001379715 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 37,113

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Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.